Shearing device



Mw. 2, w23. 1,449,159

A. A. R. BERGER SHEARING DEVICE Filed Jan. 5, 1922 www Mar.. ill, lll-i523.

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ALFRED A. E. BERGER, 0F BROOKLYN, NEW YORK.

SHEARING DEVCE.

applicativa mea January 5, 1922. serial no. 527,109.

0 all wiz-0m it' may concern Be it known that l, ALFRED A. R. BERGER, citizen of the United States, and a resident or" the borough of Brooklyn, county ol lings, city and bltate or' New York, have invented certain new and useful Improvements in Shearing Devices, of which the following is a specification.

My invention relates to the class of shearing devices set forth in concurrent application Serial No. 450,440, tiled March 7, 1921, my present improvements being likewise designed more especially for shears used in detaching coupons Jfrom interest bearing documents, and for analogous purposes, where rectangular severance is required or desirable, the object beingto provide means whereby a single cutting operation will suihce to detach a rectangular coupon, section, certiiicate, or other incidental sectional part of a bond, or other commercial paper, from the rest of the sheet, thereby saving time and labor, particularly where the necessary clippings are numerous, as alter the accruing of interest on bonds held in quantity in safety vaults, etc. Such coupons or adjunctive parts of a bond or document or the character designated being almost invariably of oblong rectangular outline, an ordinary pair ot scissors, or shears, has to be used twice for each section detached, also involving the turning of the document to effect one cut at right angles to the other, the resultant inconvenience, and the time lost in the operations, being disadvantageous in proportion to the number ot documents to be vthus manipulated.

main object in the present case is to simplify and cheapen the construction of shears of this class and facilitate manipulation thereof, While obviating` the aforesaid diiliculties heretofore encountered in the prior state of the art; and to this end my invention consists primarily and essentially in the specilic construction, combination, and arrangement of parts and appurtenances herein described and claimed,-distinctive 'features relating to the means for mounting and actuating the pivotally supported transverse cutter blade, and other incidental and adjunctive details hereinafter clearly designated.

ln the accompanying drawings,

lig. l, is a top View of my impro-ved shearing implement;

Fig. 2, is a side elevation thereof, with the parts shown in normal relationship;

F 1g. 3, 1s a front end view ol my improved shearing device, with the transverse blades closed;

F ig. 1l, is an elevation of the front end of the device, showing the transverse cutter blades apart and in normal co-relationship;

F 1g. 5, is a detail view of shear handles which may be incorporated with my main longitudinal cutting blades.

l have herein, for convenience of description, designated the main or larger cutting blades a, a, as the longitudinal blades, they being under ordinary conditions of greater length than the end or transverse blades b', which latter are presumably, although not necessarily, shorter than the aforesaid longitudinal blades a, a', for the reason that coupons, detachable certificates, tickets, and analogous parts to be severed from a common sheet are usually 'of elongate rectangular conliguratiom and hence the longitudinal cutting blades a, a, are provided for the severance of the longitudinal boundaries olf such detachable sections, and the transverse cutting blades Z2', for the severance of ythe end or cross extension boundaries of such individual sections, ot' a unitary document or sheet of the character designated.

The inner compound blades a, b, are preterably of integral construction, because their cutting edges may be ground true and sharpened with facility when unattachedto the other or outer conjunctive blades a, b,-the latter being separable, the one from the other, as otherwise it would be practically impossible in a commercial sense to finish their cutting edges with accuracy at their angle ot conjunction. That is to say, that while it is comparatively easy to sharpen the outer edges of a rectangle, it is very diilicult to sharpen the inner edges of a rectangular structure, especially at the apex of the angle. rlhereiiore, while it is desirable to make the inner unitary rectangular blades a, o, in a single piece,the pivotally connected outer blades ct, b', are preierably, in fact necessarily, made separable, and operatively coupled vtogether at their conjunctive ends by detachable means, substantially as hereinafter more fully set forth.

rlhe basic extremities o1c the longitudinal blades a, a', are'pivotally connected by a ulcrum bolt c, and nut c', or equivalent lil mechanical expedient, and a spring washer c2, may be interposed between the nut c', and the adjacent side oi the blade to attord suitable ri'ctional tension and resistance,

and insure accurate alignment of the cutting edges as related to'eachother.

`The longitudinal blades a, a, are normally held open with their cuttingy edges apart to a prescribeddegree by the resil-v ience of a bow spring s, acting in conjunction with a stop or fined gauge 9 Fig. 2. In the speciic construction shown" by way of exemplitication in the'drawings the said bow spring s, is mounted medially on'they head c", ofthe fulcrum bolt @,andthe otherwise treer extremities of said springfrest in holes formed for the purpose in studs s', s',

afliXed respectively to the loi'igitudinall blades a, a";andthe -gauge g, is aliixed to onel of said blades and protrude's'finto a concentric slot g2, formed `for the purpose in the other of saidlongitudinal blades, as shown'particularly'in' Fig. 2-the end walls of said concentric slot g2, acting as stops to limit'the movement oit said blades a, a,`

as related to each other, in either direction. By this or equivalent means thelongitudinal blades a, a', are operatively united to function as ordinary shears;` and ltheir Shanks am, a, at the rear oit lthe'itulcrum c,

may be provided with any 'suitable extensions in the form of handles or lever arms adapted to facilitate manipulation in accordance with the requirements of specialv use, and the powerl requisitevtofetl'ect the severance of the sheet sections involved.

Thus, in Fig. 5, I show :detached handles L,

7L, which may be screwed 'or riveted vto, the

'Shanks a", a, of said blades ina manner well known in the art.

rllhe outer longitudinal blade a', isiormed at its outer extremity withl a rigidly at-` tached bearing block a3, forming the support for the 'tulcrum at, on whichthe ,transverse rockable blade Zi', is pivotally mounted. In the construction shown in the drawings, lthis tulcruni at, consists of a screw,

the head a, ot which retains said rockable` blade o', in position on the end of the longitutlgii'ial'bladec, a tension -washer 2,being by preference interposedbetween said head a, and the said rockable blade b, as vindicated more particularlyin Figs. 2, 3 ande.

A retractile spring r, rattached to the rear portion of the'rocker blade ZJ, and'to the bearingfblock a3, tends constantly to hold .rockable blades of, contactswith'a trip arm ax, on `the extremity ot the lower inner lon-` gitudinal cutting blade a, thereby lrocking said transverse blade b', into the position shown in Fig. 8. ln order to reduce trictional contact duringl this operation, vsaid rear varm b, ot' the rockable blade is .preferably provided' with 'a contactual roller bx, for engagement with said trip arin ax, on t-h'ein-ner longitudinal blade a.

The .overlap ot the rear arm t, of the transverse rockable blade o', beyond the end75 ot the inner longitudinal blade a, and the edge of its tr-ansverseblade at the angleof juncture between the cutting edges, insures continuity and conjunction ot said cutting edges, and obviates the possibility ot any, space atthe apex ot 'the angle oi severance thatniiglit otherwise iinpair the perfection ot cut, and result in raggedness oit they edges of detachment. f

Vlien ordinary shears are used in cutting eti' coupons or like supplementaryparts of bonds or documentscare must be taken to have the transverse or shorter cut even, lapproximately at rightly-angles to the main or. longitudinal cut, otherwise both the docu-- ment and the part' severedtheretrom may be mutilated or disigured'more or less, and hence 'heretofore time `and skill were requis-Y site t'o vattain satisfactory detachment in perfect alignment with the prescribed boundaries; whereas by the useof my rectangular cutting implement correct and accurate alignment kis assured at a singleA operation, and the time and labor involved is materially reduced. L s As compared with the use of a square or straight edge for the severance vof coupons,

vses

ioo

etcf., my rectangular shearing device is .Still f more advantageous', as l obviate labor and inconvenience involved in holding down of the square or straight edge on the paper,l placed on a flat suri''ace, yand the danger of,

tearing the paper in irregular manner. itl best the square or straight edge, when used tor the purpose, leaves a ragged, unseenily edge on both document and part detached. What l claim asmy invention and desire to secure by Letters Patent is,- K l l. ln a shearing implement ot thel character designated, the'combination of a pair of pivotally connected longitudinal blades, one ot which `is termed integral i with a transverse cutting' blade, Vand a rockabl'e transverse cutting` blade pivot/ally mounted on the end ofthe other longitudinal blade, substantially in they manner and vfor the purpose described.

rio

2. ln la shearing implement ot the character designated, the combination ot a pair oit i pivotally connected longitudinal blades, one 1,25

ot which is formed integral with aftransverse cutting blade, and :a rockable transverse cutting'blade pivotallymountedon lthe end ot the otherlongitudinall blade,

stop'on the latter limitingthe motion ot 130 ifiaaiee B said roclrable cutting blade in one direction, and a retractile spring arranged to normally hold said rockaole cutting blade against said stop, substantiallyin the manner and for the purpose described.

ln a shearing implement of the character designated, the combination of a pair of pivotally connected longitudinal blades, one or which is formed integral with a trans verse cutting blade, Vand a roclable transverse cutting blade pivotally mounted on the end of the other longitudinal blade, a stop on the latter limiting the motion of said rcclzable cutting blade in one direction, and a retract-ile spring arranged to normally hold said i'oclrable cutting blade against said stop7 together With a trip arm on the lirst named longitudinal blade arranged to actuate said transverse rockable blade against the resistance of said retractile spring, substantially in the manner and for the purpose described.

4.-. ln a shearing implement of the character designated, the combination of a pair of pivotally connected longitudinal blades, one of which is formed integral with a transverse cutting blade7 and a rockable transverse cutting blade pivotally mounted on the end of the other longitudinal blade, a stop on the latter limiting the motion ot said rockable cutting blade in one direction, and a retraetile spring arranged to normally hold said rockable cutting blade against said stop, together with a trip larm on the first namedlongitudinal blade arranged to actuate said transverse roekable blade against the resist-ance of said retractile spring, and a roller on said transverse rockable blade arranged to Contact with said trip arm on the first named longitudinal blade, substantially in the manner and for the purpose described.

ALFRED A. R. BERGER. Witnesses:

DOROTHY M. CARMIOHAEL, GEO. WM. Murr. 

